Sebuah tabung tingginya 10 cm dan diameter alasnya 14 cm, hitunglah a. luas alas tabung b. luas selimut tabung c. luas tabung tanpa tutup d. luas sisi tabung please jawab a,b,c,d nya dgn tepat, please bantu
linaharyati
A. L.alas= 2Πr² = 2×22/7×7×7 = 308 cm² b. L.selimut= 2Πrt = 2×22/7×7×10 = 440cm² c. L tab tnpa ttp = Πr²+2Πrt = 22/7×7×7+2×22/7×7×10 = 154+440 = 594cm² d. L sisi = 2Πr(r+t) = 2×22/7×7(7+10) = 44×17 = 748cm²
= 2×22/7×7×7
= 308 cm²
b. L.selimut= 2Πrt
= 2×22/7×7×10
= 440cm²
c. L tab tnpa ttp = Πr²+2Πrt
= 22/7×7×7+2×22/7×7×10
= 154+440
= 594cm²
d. L sisi = 2Πr(r+t)
= 2×22/7×7(7+10)
= 44×17
= 748cm²